NYC-WTC_000229815

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Gi Diip #: 6479 Filter Type / Filter Area: MCE 385 mm" LabSample^ 14 Grid Opening Size: 0.01124 ■

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: ■20,000 . GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: ROMAN PEYSAKHOV

GC. Structure structure Type Length ID of Structure N or v EDS ■ (Nonadb No F B C M >=05 M >=5|J Chrys Amphibole Notiasb Ambig/ND No Coord ' <5u Elements)

<±±:t=

Sb'UL'i - > u.pLi > 5:1 Aspect Ratto Grid acceptance: ^/= Positive oitfraciion pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboraioiy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 'J= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ■ AMPHIBOLES Amphibole F = Single Fiber Amosite ! B = Bundle f<3 libers <1 fiber diameter apart ! Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Siructures-Oetected

CITY_21MC100_002869060

NYC-WTC_000229815